Machine for preparing yarn packages



Nov, 8, 1938., I E. .1. ABBOTT 2,135,485

MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, 1930 13 Sheets-Sheet l m ,I (L I W 4 -Z I I 5 (g1 l J 5 5/ L-J min EEEEEEEE NOV. 8, J ABBOTT 2,135,485

MACHINE FOR PREPARING YARN PACKAGES NOV. 8, 193-8. ABBQTT 2,135,485

MACHINE FOR PREPARING YARN PACKAGES Filed g- 1930 13 Sheets-Sheet 3 Nov. 8, 1938. I E, J. ABBOTT 2,135,485 I I MACHINEFOR PREPARING YARN PACKAGES Filed Aug. 21, 1930 13 Sheets-Sheet 4 F 421-; f w

E. J. ABBOTT Nov. 8, 1938.

MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, 1930 13 Sheets-Sheet 5 E J. ABBOTT Nov. 8, 1938.

MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, 1950 16 Sheets-Sheet 6 Nov. 8,' 1938. E. J. ABBOTT MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, 1930 13 Sheets-Sheet 7 NOV. 8, 1938. J ABBOTT 2,135,485

MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, 1930 13 Sheets-Sheet 8 NOV. 8, 1938. J ABBOTT 2,135,485

MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, 1930 1a Sheets-Sheet 9 7/4? I a 7/ j /ar5 Mia/'76 5- NOV. 8, 193-8. A ABIBOTT 2,135,485

MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, I9 13 Sheets-Sheet 10 Ofi Nov. 8, 1933. ABBOTT v 2,135,485

MACHINE FOR PREPARING YARN PACKAGES Filed A 2 1 1s Sheets-Sheet 11 Nov. 8, 1938. E. J. ABBOTT MACHINE FOR PREPARING YARN PACKA GES l3 Sheets-Sheet 12 Filed Aug. 21, 1930 'Nov. 8, 1938. ABBOTT 2,135,485

MACHINE FOR PREPARING YARN PACKAGES Filed Aug. 21, 1950 15 Sheets-Sheet 13 Patented Nov. 8, 1938 UNITED STATES PATENT; OFFICE"? MACHINE roa PREPARING YARN PACKAGES 7 Q I v Edward J. Abbott, Wilton, N; H., assignor to Abbott Machine Company, Wilton, N. H., a corporation of New Hampshire 89 Claims.

Thisinvention relates to textile machines and especially to winding, doubling, twisting or spinning'machines of the type comprising means for winding a wound mass or package of yarn, thread or other filaments, hereinafter referred to as yarn. The invention will be explained as embodied in a machine capable of preparing traverse wound headless self sustaining cops, balls or cheeses, cylindrical or co'nical, built up, as usual,

of layers of yarn lying in spiral or helical formation, reversals of the direction of pitch of. winding occurring at the unsupported end faces constituted of these reversals. Such a package is suitable'for warp, for weaving, for rewinding into other packages, for direct use in warping, knitting, sewing, braiding, or other yarn-using machines, .or as weft for a continuous weft loom.

One object of this invention is, to provide a machine requiring a minimum of attendance adapted simultaneously to wind at high speeds self-sustaining headless packages comprising the wound lengths of yarn of a plurality of difierent spinning bobbins or other primary unwinding containers wound in succession to form the headless package. Another object of the invention is to provide a machine of this character and for this purpose adapted to transport the yarn masses past an operator at a fixed station, which shall be adapted simultaneously to operate for wind- .goring a large number of winding carriers, and at least the same number of unwinding carriers each serving a winding carrier; and further to provide automatic means for detecting breakage or exhaustion of the unwinding supply and to provide means for cessation of actuation of the winding carriers severally when such a condition is de tected. Another object oi the invention is to provide pairs of unwinding and winding carriers each with a detector adapted to stop winding on the occurrence of a. knot, bunch, snarl or slub, hereinafter referred to as a slub, and to prepare the winding and unwinding carriers for resumption of winding when a detected slub has been removed, or when .adetected exhaustion or breakage has been remedied by uniting the breaking end of agb'roken supply yarn or the leading end of a replenishment unwinding package to the following end of theyarn' on a winding carrier. Suchpreparation may include dofling of spent supply bobbins preparatory to replenishment, cessation of winding of full packages, and posi- .-tioning of stopped or full winding packages for piecing up'or dofiing at or near the operators station.

vM 'Still further objects of the invention are to Application August 21, 1930, Serial No. 476,776

providethe devices and perform the'operations indicated in respect to winding and unwinding Y carriers traveling in a circulatory path in respect to the frame of the machine, so that circulatory couples of unwinding and winding carriers may proceed from an operator's station along an outgoing part of the .path of motion away from the operator and return toward the operators sta-' tion, whereby stopped winding carriers may be carried to the operator's station in optimum condition for the attention of the operator; or, if desired for the function of automatic replenishment and end uniting devices, for example such as those shown, described and claimed in the application of Edward J. Abbott and William G. 15

Abbott, Jr. for Letters Patent of the United States for Automatic winding machines filed December 7, 1926, Serial No. 153,132 (Patent No. 1,700,425 dated January '29, 1929 which machine is in turn an improvement on my Letters 20 Patent No. 1,609,639 dated December 7, i926, further improved by this invention.

Furtherobjects of the invention are to provide improved subordinate agencies for supporting winding and unwinding yarn carriers; to provide 5 improved tension, stop motion and slub catching devices; to provide improved driving means for operative motions of traverse guides adapted to lay the yarn on the winding carrier in reversing quick-pitch spirals and improved controlling means for the traverse guides, and to provide winding package carrier and positioning means adapted to position winding or unwinding packages for manual operation or for automatic operation for the correction of the, condition of the yarn supply or its replenishment, and to provide a machine indifierently adapted to wind conical or cylindrical packages.

Other objects of the invention are to provide improved devices for jointly controlling the pro- 40 gression of the carriers and winding of the yarn and for separately controlling the progression of with progression of the carriers.

* Further objects of the invention are to provide an improved conical wound package and amethd and mechanism for producing thispackage, and particularly to provide an improved tension device for" use in winding in conical layers.

Other objects of the invention, improvements and features of advantagewill appear from a consideration of specific/instances oi the invention explained herein and shown in the accomaway, of the end of the'machine opposite to the operators end, the carriers and their driving chain being removed;

line 2 2. of Figrl g Fig. 3 is an elevation, partly in section on the 1 line 33 of Fig. 1 showing the left-hand end of the machine;

Figs. 4 and 5 are corresponding detail elevations, partly in section at right angles to the longitudinal axes of the machine and to larger scale than Fig. 1, respectively, showing different positions of a winding package'spindle carrier, the breakage and exhaustion detector devices, and spent bobbin domng devices;

Fig. 4 is a vertical section to larger scale than Fig. '1, showing details of the yarn traverse uide;

Fig. 6 is a right side detail elevation of the parts shown in Fig. 4 and to the same scale;

Fig. 7 is a fragmentary detail elevation in the direction of the arrow 1, Fig. 5, omitting many parts; ,7

Fig. 8 isa detail perspective of a slub catching yarn guide;

Fig. 9 is a view on a scale corresponding to Figs. 4 and 5 showing a modification adapted for cone W Fig. 10 is a right side elevation of the parts shown in Fig. 9;

Fig. 11 is a detail elevation in the direction of the arrow ii of Fig. 9;

Fig. 12 is a view similar to Figs. 4 and 9 illustrating domng and tension devices especially applicable to a modified form of unwinding package carrier;

Fig. 13 is a right side elevation of parts shown in Fig. 12;

Fig. 14 is a right side elevation of the modified construction shown iii-Figs.- 12 and 13;

Fig. 15 is an elevation of the rotary traverse ga n of general application to machines of. this Fig. 16 is a detail vertical longitudinal section through the device shown in Fig. 15;

Fig. 17 is a fragmentary plan view illustrating one of the traversing carriers for winding and unwinding yarn supplies, superposed parts being removed, and particularly illustrating the rolls relied upon for guiding the carriage and tensioning the friction driving devices for a rotary traverse cam;

Fig. 18 is a view similar to Figs. 4, 9, and 12 illustrating a modified form of carrier having improved slub catching, tensioning, and yarn guidingdevices" and an improved form of parts adapted to initiate and control starting and stopping of winding and shiftingof position of the winding mass;

Fig. 2 is a fragmentary vertical section on the Fig. 19 isa right side elevation of parts shown in Fig. 18;

Fig. 20 is a fragmentary diagrammatic view showing the carrier at a position on the machine at which the controlling parts of the carrier have been moved by a. stationary contact to stop winding;

Fig. 21 is a schematic view similar to Fig. 20 and showing successive positions of the controlling parts on the carrier as these parts engage a stationary cam to cause controlled return of the winding mass into contact with the drive roll.

Fig. 22 Ba fragmentary left side elevation of certain of the controlling partsof the carrier,

viewed from the side opposite to that shown in.

Figs. 20 and 21;

Fig. 23 is a section taken on the line 23-23 of Fig. 19 illustrative of a modified form of tension device; c

Fig. 24 is a sectional view showing a preferred connection between adjacent sections of the tractor rolls and the bearing provided at this connection;

Fig. 25 is a fragmentary view of a tractor roll, winding mass and traverse cam, showing, on a greatly exaggerated scale, preferred variations in diameter of the tractor roll for the purpose of breaking up ribbon wind;

Fig. 26 is a fragmentary plan view with many parts removed showing a device for causing the tires of the traverse cam to step one at a time I over the joint between adjacent sections of -a tractor roll; I

Fig. 2'? is a fragmentary side elevation showing a cover plate of a carrier and modified forms of yarn guiding, yarn tensioning andslub catching devices thereon; r

' Fig. 28 is a sectional view on the line 2828 of Fig. 27; Figs. 29 and 30 are side elevations showing the slub catcher of Fig. 27 in its normal position and in the position which it assumes in catching a slub;

Fig. 31 is a section on the line 3l3l of Fig. 29; Fig. 32 is a section on the line 32-32 of Fig. 19,

showing an improved arrangement of the travchines of these patents the present machine comprises longitudinally extending tractor rolls 5t and 55 adapted to be continuously rotated while the machine is at work, the tractor rolls preferably being formed in separable sections, and may further include means for circulating a series of winding package carriers and unwinding yarn packages about the machine. Said means in a preferred form comprises carriages it, each provided with a device for supporting the winding package and each provided with a. device for supporting an unwinding supply package, each of said carriages being driven by appropriate means to circulate about the respective ends of the machine and longitudinally of each of the tractor rolls 5t and 51, the winding operation being performed during travel of the winding package carriers in sliding'contact with the surface of the tractor rolls.

'Travel. of the carriages I0 may be appropriately induced, for example by the endless chain constructed and adapted to operate according to my said patent, and guided-by sprocket wheels 36 at each end of the machine (Figs. 1, 2, 1 and 2 The left end of the machine shown .insaid figures is the preferred station of the opaisa isis pulley 43 carrying a driving belt 44 which engages a driving pulley 45 on the shaft l3. The shaft III is thus driven at low speed as compared with that of the motor shaft through the driving connections l2, I4; 45, 43; and the gear train 35,

. 37, 38. To actuate the clutch'element 42 I mount erator, when the machine is not wholly automashown in Fig.,3),.may be L-channels carried on suitable lugs 4 5*- of the transverse and end frame members. The curved end sections of the rails 4 and 5 are central upon the axes of the vertical shafts carrying -the sprocket wheel 36 and the corresponding sprocket wheel at the other end of I the machine (not shown). The sprocket wheel 36 at the operator's end of the machine is preferably the driving member of the system comprising the chain 31], the wheel 36, and

the similar'wheel at the other end of the machine, and the short vertical shaft Ill upon which the wheel 36 is fast is driven by means under appropriate control of the operator. Preferably shaft Ill and sprocket wheel 36 are connected by a frangible connection, herein shown as a shear pin l0, adapted to break in the event that progression of the carriages is unduly obstructed, thus to prevent breakage of the chain or other parts of the machines As shown, the primary source of power is preferably an electric motor mounted on one of the frames I and having a transverse shaft carrying a driving pulley l2 at one end. A countershaft |3 (Fig. 1) turns in housing brackets 52 and 53' at the top of the frame I. This shaft I3 is provided with a free pulley l4 actuated by a belt l5 and adapted to be connected to the shaft by means of a shiftable clutchmember 5 splined to the shaft l3. The clutch member I6 is operated by a pin fork I on a clutch lever 20 mounted on a slanting pivot l9. On the lever 20, which may have a handle 2 I projecting toward the operator, is a switch box |8 within. convenient reach of the operators hands. This box has stop and start buttons v22 for the motor circuit housed in a conduit 23 (Fig. 2).

The shaft Ill is held in suitable bearings at the top and bottom of a hollow housing comprising a casing 25 attached tothe end frames 2, said casing having a cover 26. Within the housing the shaft ||l carries fixed thereto a worm wheel 21, meshing with worm 28 on atransverse shaft 29, housed within a. hollow projection 32 of the casing 25. This hollow projection is provided with suitable end and thrust bearings for the shaft 29 which projects outside of the part 32 at one end to receive a gear 35 of a train including an idler 31 meshing with a pinion 38 on a countershaft 39 having bearings in brackets 40 (Fig. 1) on the frame I. i

Keyed on the shaft 39 is a clutch element 42 adapted to lock to or release from said shaft a a shaft 46 in bearings carried by the frame, said shaft 46 having a T-head 41 carrying pedals 48, 48 for the operators feet. At its inner end the shaft 46 carries a clutch shifting fork 49 engaging a groove in the clutch element 42. By operating the pedals 48, the operator is able to stop or start motion of the shaft ll) and control the progress of the chain 30 and elements driven thereby, as distinguished from control of allof the agencies of the machine by manipulating the stopand start buttons 22. By shifting the stop lever 20 the operator is able to idle or actuate the shaft I3 which controls'the actuation both of chain 30 and of the tractor rolls 50 and 5|.

In order to drive the tractor rolls (referring now more particularly to Fig. 3) reduced ends of the shaft l3 enter the housings 52 and 53 which are also provided with bearings for the reduced ends respectively of the rolls 50, 5|. The reduced ends of the shaft 3 (Fig. 3) carry bevel pinions 54 and 55 respectively meshing with bevel pinions integral with or fast on the ends of the rolls 50 and 5| respectively. Itwill be perceived that shaft |3 drives the chain 30 and also the rolls 50 and 5|, and manipulation of clutch element |6 by handle 20 is effective to stop both the winding drive and the circulation of the winding carrier carriages. On the other hand'the treadles 48 may be relied upon to stop and start the motion of the chain 30 only. In normal use, when the machine is manually controlled," it may .often be desirable to stop the motions of the winding carriages past the operator without stopping the winding on all of the winding carriers in contact with the tractor rolls 50 and 5| along both sides of the machine; by stopping the progress of .the bobbins unusual conditions can be provided for by allowing the operator as much time as is necessary to correct any abnormal condition as the winding carriers pass her. Normally, however, there is ample time in-passing by the operators station to perform any necessary operations, such as replenishing the unwinding supply, dofiing. full wound packages, and piecing up broken ends.

The chain 30 for circulating ,the carriages l0 may be of any desired construction, for example that shownin either of the above patents. The winding and unwinding yarn package carriers.'Referring to Figs. 2, 3, 4, and 5, 6, 15, 16, and 17, the unwinding and winding packagesare arranged to be traversed around the machine in the'direction of the arrowsX in Figs. 1' and 2 At its upper end the plate 60 (see Fig. 6) may be integral with or attached to an upperhead portion 65 of the carriage H), for example by bolts 64. The plate 60 may, if desiredjbe of light construction comprising de flanges 60 and being providedwith openings 6 The head 65 has outwardly projecting parallel end plates 66, 61 spaced apart to provide room one of the rolls 50 or 5| adjacent to which the between them for a rotary'traverse cam 1|! (Fig. One of the end plates of the head 65 may be extended as shown at 68 to provide a' bearing 69 for a stud 13 on a lever arm II carrying a spindle 12 for the winding core or carrier to.

The length of the lever arm H is such as to .bring the surface of winding carrier or the winding thereon always into surface contact with a pinch bolt 1|, the tubular clamp so formed taking over an end piece 'H carrying the spindle 12. On loosening the pinch bolt H. the part 1 I may be universally adjusted to vary the distance between centers 13 and I2 and also to vary theangle of the spindle 12 from parallelism with the axis of the roll 50 or 5| to the angle of a cone carrier, as mentioned below in connection with Figs. 9 and 10.

Referring now to Fig. 17, the head portion 65, including end plates 66, 61, of the carriage I0, is arranged to have limited motion toward and away from the tractor rolls 59, 5| for the purpose of providing freedom in respect to the rail 4 and the roll 50 or 5|, for accommodating ,curvatures at the end of the machine, and to enable the traverse cam 10 to be provided with bearings without lateral freedom of motion, provision being made for resiliently urging the upper part of the carriagetoward the tractor roll, thereby hold-' ing the rotary traverse cam in frictional driving contact with the tractor roll. As best shown in 4 Figs. 4 and 17, the head 65, preferably an integral casting, is provided not only with the outstanding end members 66 and 61, but is also provided with rearwardly projecting lugs 16 above the plane of the rail 4, said lugs being vertically bored. The bore in one lug 16 receives a pin H in bores in the forked end-0f a link 19 having a bearing hole at its other endto receive a pivot pin 80 carried by the chain 30. The bore in the other lug '16 receives a pin 8| on which is pivoted a link 82 carrying a vertical axle pin 83. for an anti-friction roll 84. Link 82 is providedwith a lug into-which is hooked a tractor rod 85 extending through a bore 86 in,the head 65 and provided with a spring 81 adjustable by a'nut 81 The spring 81 urges the roll 84 toward the head 65 and against the interior or rear vertical face of the rail 4.

Inward or rearward motion of the head 85, thus induced, is limited by anti-friction rolls 88, 88 an vertical downwardly projecting studs disposed respectively near opposite ends of head 65, and bearing against the outer face of therail 4. It

will be observed that the contact points of the rolls 88 are laterally separated from the bearing point of the roll 84; this permits a controlled position of the upper end of the carriage l0 in respect to the curved 'parts' of the rail and normally permits freedom between the rolls" 88 and the roll 50 or 5| sufl'icient to permit the spring 81 to hold the traverse cam I0 in pressure contact with the tractor roll 50.

Referring now to Figs. 15 and 16, the traverse cam I0 may be a cylindrical barrel having therein an outer ball race 9|) taking over a series of balls supported by an exterior groove in ,a stationary inner race 9| provided with a nipple 92 carrying a cross pin 93 to take over the forked and reduced inner end of a 'pintle 94 which may be fixedly set in a hole in the member 68 of the head 65, as by a set screw 95. Preferably both ends of the barrel are provided with similar bearings, the pintle 94 at the opposite end of the barrel being secured in an opening in the member 81 of the head 65. This arrangement is such that yarn or fly does not tend to work around the pintle' 94, since the latter is, stationary. v

The traverse cam 10 is provided with a crossed spiral cam groove 10*, preferably of rectangular cross section, and at each end the cam 10 may be provided with a friction ring 19 of cork, cork composition, felt, rubberized felt, rubber aggregated ground cork, or any other durable friction material, said rings projfecting slightly beyond the cylindrical surface of the cam body.

0n the back face of the head 85 at points suitably laterally separated, studs 96 may be provided to carry anti-friction rolls, 9! which rest on the top surface of the rail 4, and support the weight of the carriage.

Traverse guicZa-To wind a cylindrical cheese,

' cop, or package such as that shown at C in Fig. 6,

or to wind a conical cop or-package such as that shown at C in Fig. 10, it is requisite to lead the yarn onto the surface of the winding package in cusps collectively constituting the ends of the headless cheeses or packages. This implies a rapidly moving traverse guide, to move which the barrel cam 10 is rotated at a surface speed nearly the same as thatof the tractor rolls 50 and 5|,

-which drive the winding package at a suitable a quick-pitched spiral reversed to form a cusp in the lay of each yarn at the ends of the layers, said and provided with a vertical lug |03bored for a headed pintle' I94 having secured to its lower end an arcuate follower :I05 engaging the cam groove H!* of the cam Ill. Integral with the cast- The head '65 is preferably provided (see Fig. 6) with a sheet metal cover plate |||l comprising a substantially flat horizontal portionoverhanging and spaced from bar I00 {and having a straight edge'parallel with the axis of the motion of the cam 10 and the tractor rolls. The cover plate also comprises a part which slopes downwardly and outwardlyas indicated in Figs; and 5. As best shown in Figs. 4 to 7 inclusive/the plate 0 is upturned to form a flange PH. interrupted to form a central yarn gate at 4. The yarn Y feeding from a supply packagemounted on the lower part of the carriage passes through the gate 4. If it is desiredtoinspect the yarn for slubs, a slotted blade ||5 (Fig. .8) may be fastenedon the under side of the cover plate ||0 to receive in its slot the yarn passing upwardly to the gate I I4, said blade operating in well known I end portion of the frame.

manner as a stop for slubs moving with: the yarn. By providing a traverse cam rotatable about an axis fixed with respect to the carrier .III, and

causing the traverse cam to bear against the tractor roll,as in the device explained above, the traverse eye may be relied 'upon to assume during winding a constant relation with respect to the nip or bite of thetractor roll and the winding package, and thus lay the yarn evenly on the package at highspeeds.

Adjustment of the drive chain The provision of the link!!! pivotally mounted at one endon the chain 30 and at the other end on the carrier, permits the distance fromthe carrier to the chain to be varied. This capability is of advantage in permitting an improved constructionsfor adjusting the length of the chain 30 or the distance between sprocket wheels 36,

without necessarily moving either semi-circular end portions of the guide rails II and 5, or either and 2 which show the end of the machine opposite to the operators end, the machine includes an end frame.2 generally similar to the opposite end frame 2, and suitably fastened to one of the frames I of the machine. End frame 2 is preferably provided with a horizontal slide bearing I8 for a slidabl'e block 5' carrying a vertical shaft Ill for the sprocket wheel .38 at this end of the machine. Suitable bolts 513 passing through slots 514 in the" block 5' are adapted adjustably to secure the block 5'" to the bearing 510, and a screw 5,15 turning in the adjacent frame I and bearing against the block 51] is adapted to be screwed in and out to de termine the position of the block 5'" and sprocket wheel 36 longitudinally of the machine. Thus, variations in the length of the chain 30 may be compensated for independently of the rails L and 5 and end frame 20 of the machine. Accordingly no provision need be made for permitting movement. of the end sections of these rails as in my Patent No. 1,609,639. The above- 'described link connection between the chain 30 and the carriers In permits the carriers to pass 'freely around the end of the machine without binding even though the sprocket wheel is moved considerably toward or from the adjacent curved portions of the guide rail 4. e I

Devices for controlling position of the traverse cam As each carrier reaches. theen'd of a tractor ,roll 50 or 5I, it is desirable to remove the tires of the traverse cam roll 10 from the tractor roll I to permit the cam to pass the end bearing of the roll without interference. To this end, a cam 580 (Figs 1 and 2), is preferably provided on the upper rail 4 of the guideway in position to strike contacts comprising the anti-friction rolls 88 of the carrier and force these rolls together with the carrier outwardly as the carrier reaches the end of, the tractor roll. Preferably this cam 500 extends continuously around theend of the machine ending at a corresponding point on the At this point the anti-friction j rolls 88-leave the cam and the spring 8'I is enopposite side.

Referring to Figs. 1

For thepurpose of preventing the tires 10 of the traverse cam from being caught by the ends of sections of the tractor r'olls at the joints between sections, a cam 5M (Fig. 26) is preferably provided on the rail 4 at such points, the length of this cam preferably being such that only one of the anti-friction'rolls 88 is forced outwardly away from the tractor roll at a time. Since, in the illustrated form of carrier, the distance between the anti-friction rolls 88 approximates the distance between the two tires of the traverse cam, this action of the cam 50I results in each tire 10 of the traverse cam being forced away from the'tractor roll as it reaches a jointbetween sections of the roll and being allowed 'to return into contact with the tractor roll while the other tire of the cam is being driven by the roll. In this way the tires are held against striking the end faces of the rolls in passing while the arrangement whereby only one tire is forced outwardly at a time insures that the tractor roll will be continuously driven in passing the joints.

Supply package carriers.--Provision is made to carry at least one supply yarnmass, by which term I intend to include a bobbin, skein, spool or the like, on each carriage III. In the preferred operation of the machine, a supply (spinning) bobbin is exhausted on one passagearound the machine and it is therefore provided to doff the supply bobbin prior to the second passage of the operators end of the machine. As best'shown in Figs. 4 and 6, the plate 60 may be bored for a short shaft I carrying a cam arm I 2I at the rear side of the plate and an Ill.

Suitably mounted on one of the frame members of the machine is 'a bracket I which is provided witha pin I26 (Figs. 4 and 6) adapted to engage the arm I 2| as the carriage moves along its path and thereby to turn the arm and bracket I 22 to the posiitpn shown in broken lines in Fig. 6, and in full lines in Fig. 5.

The pin I26 is located on the machine some- -what beyond the normal point of exhaustion of the bobbins B and the spent bobbins are doffed ,by gravity when thebracket I22 is turned upside down at this place, where they may be received in a receptacle or on a conveyor.

Devices for stoppingthe driving of the winding mass and/or shifting the position of the winding mass preparatory to replenishment and similar operations on the yarn so as to present the wound packageand/or the strand of yarn leading thereto in more conven ient position with respect to an operator or automatically actuated replenishing devices. In the present embodiment of the invention, cessation of driving the winding mass is accomplished by swinging the package carrying arm 1| to the right from the position of Fig. 4 to the position of Fig. 5, which at the same time accomplishes the result of, presenting the package and strand in a more convenient position for replenishment operations. It will be understood however that my invention is not limited to the joint accomplishment of these results of stoppage and of shifting the winding mass but that on the contrary the invention contemplates accomplishing.

either of these results severally. For the purpose of effecting such stoppage of the winding mass and change in its position, the present invention provides shifting'means operating as a consequence of travel of'the carriers along the guideways to swing the package carrying arms ll by the application of force derived from the relative movement of the carrier and guideway; To this end suitable shifting connections herein shown (Fig. 4) as a crank arm 300, a lifter link 30l, a crank 302 fast on a shaft 303, and a dog 304 pivotally'mounted at 3l6 on the shaft 303 are provided, the dog 304 being adapted to engage some fixed or normally, stationary abutment on the machine as the carrier passes.

1 to 10 such 'an abutment is provided in the form of along pm 30'l (Figs. 4 and 5) extending horizontally from the rail 4 of the guideway, for

instance at the point indicated by the reference character 30'! of Fig. 1. As the carriage reaches this point in its travel, the dog 304 contacts with the long pin 30? and as a consequence rotates shaft 303 and rocks the arm 302 to lift the rod 30! and swing the package carrying arm ll outwardly from the guideway to the position shown in Fig. 5. By the provision of the pin 30'! at a point near the end of the tractor roll H, the winding package is automatically disengaged from the tractor roll somewhat before the end of the roll is reached. The wound package is thereafter carried around the semicircular end of the machine in position for the wound package and free strand of yarn to be subjected to replenishment operations. l

It is preferred to provide for a separation of the normally closely disposed spindles of the machine, to provide .for ease of domng or donning winding packages or cores. chine illustrated in Fig. 1, the curved end portion of the guideway has the radius of an arc tangential to the two opposite straight portions of the guideway. It will now readily appear that the preferred outward swinging of the packagecarrying arms H to the position of Fig. 5 is especially useful in causing the spindles to travel around the curved end of the machine in a path of substantially greater radius than that of their guideway, as shown in Fig. 1. With the arc of travel of the endwise-moving spindles thus increased, adjacent spindles are thereby separated in the direction of their travel a substantial amount, which as indicated in Fig. l is suficient' to provide between adjacent spindles a space adapted to accommodate a full package during dofiing. When any full package reaches the curved end of the machine, such full package can readily be slipped off its spindle endwise into the space provided by the separation In the embodiment of the invention illustrated in Figs.

In the form of maof adjacent spindles, even though the winding spindles are normally so closely disposed that there is very little space between them during travel along the straight portions of the guideway.

Thus, as illustrated herewith the means for separating the adjacent spindles may utilize the described mechanismfor outwardly swinging the several packages. -As will appear below, the outward swinging of individual packages may in some instances be brought about by the action of various forms of stop-mechanism acting as a consequenc of cessation of proper travel of the yarn.

Stop mechanism acting as a consequence of cessation of proper travel of the yarn-In case of cessation of proper travel of yarn to the winding massit is desirable that thewinding mass be removed from the tractor roll in order to prevent subsequent wear of the wound yarn by con-' tinued abrasion of the outer layers of yarn by the tractor roll, as well as for the purposes of presenting the wound package and free end of yarn in convenient relation to the operator or to automatically actuating replenishment devices. the illustrated embodiment of the' invention, wherein replenishment is effected at one end of .the machine, it is highly desirable to effect an immediate shifting of the wound package to the position in Fig. 5 upon such cessation of proper travel of the yarn, for the described reason of preventing damage of the wound package before the end of the machine is reached. 'In the pre ferred forms of the invention illustrated, this is accomplished by the utilization of the previously described dog 304 and'its connections to the package carrying arm H, to lift the packagecarrying arrn ll upon cessation of yarn travel occurring at intermediate points along the path of the carrier. I

Referring to Fig. 6, the yarn Y traveling in tensioned condition to the winding package is preferably subjected to the slight added tension of a feeler 3i 0, herein shown is a rectangular wire bail whose parallel arms have pivots mounted in opposite lugs 3H2 (Fig. 5) which depend from the cover plate N0 of the carrier. This wire bail has a depending leg 312 connected by means of a link 3! 4 to thedog 304 which is pivotally mounted upon shaft 303 to swing-about an axis transverse to the axis of rotation of'the shaft 303. Referring to Fig. 4, the tension introduced in the yarn Y by the rotation of the winding mass is sufllcient to hold down the feeler 3l0 and cause the connecting link 3 normally to hold the dog 304 in an outwardly inclined position. The weight of the dog 304 however is such that upon cessation of proper travel of the yarn resulting for example from diminution of tension between the winding mass and the tensioning device guides, slub catchers or the like hereinafter described, or absence of a strand of yarn on its way to the winding package, resulting for example from breakage or exhaustion, dog 394 will drop to a vertical position and swing the feeler 3E0 upwardly to the position of Fig. 5. In order to effect stoppage of winding and the desired shifting of the position of the yarn mass upon I such an occurrence, a plurality of pins 39% (see Figs. 4., 2, and 18) are provided at suitable inter vals along the rail 5, these pins being of such length that during normal winding as in 4 the dog 3% freely passes these pins. ViThen the dog 30% drops to the vertical position as a result of cessation of normal travel of the yarn, the dog 36 engages the next pin 3|8 which the carriage I0 passes, and continued movement of the carriage swings the dog in the same manneras is done by the above described pin 301, moving the package carrying arm- II to the position in Fig. 5

thereby both stopping the rotary driving of the winding mass and shifting the winding mass to a convenient position for the replenishment operation.

Referring to Fig. 4, the previously described pin-- are again caused-to rotate for winding, in the present instance by being swung into frictional engagement with the adjacent tractor roll. Preferred devices forsaccomplishin'g this result include as operative elements the rod 30I, crank 302 and shaft 303 employed in lifting the wound package but in this instance actuated in a reverse direction to return the package to the position of Fig. 4. For actuating these parts in this manner another pin 320 (Fig. 5) projecting from the rail 4 similarly to pins 301 and 3I8 and located at the point indicated by the reference character 320 in Fig. 1, engages a. part 32I (Fig. 5) projecting from the dog 304 on the 0pposite side of the pivot point 3I6 from the part of the dog which engages the pins 301 and 3I8 previously described. Thus after passing around the end of the machine shown in Fig. 1, all winding masses which may have been subject to replenishment arev started again to wind, the winding continuing as the carrier moves along the tractor roll 50 either until the end of this roll is reached and a. pin 30! causes the winding to stop,

or until breakage or the cessation of proper travel of yarn occurs and one of the winding to stop.

Control of initiation of traversing with respect to initiation of winding-When the winding package W is moved from its inactiveposition of Fig. 5 to its winding position of Fig. 4 by the mechanism described above incident to resuming winding of a package which is passed around the end of the machine, resuming winding after of the new package, it is desirable that the package attain approximately its full speed before the traverse mechanign begins to lay the yarn in spiral windings; otherwise there isxlikelihood of the traversing mechanism operating at such a high rate with respect to rotation of the winding mass that the package will not be wound with its fullest strength.

I It will readily be understood that the operation of the traverse mechanism may be delayed with respect to initiation of winding by continuing the cam 500 which controls the position of the carriage to such a point that the normal operations in the machine will result in resumption of winding before the traverse cam re-engages th tractor roll 50. Fig. 5 however illustrates a preferred arrangement of mechanism for delaying engagement of the yarn with thetraverse mechanism until after; Winding has been be'gun.

Referring to this figure, a stop 503 in the nature of a cam is shown as affixed to the vertical face of the upper angle iron 4 at the point at which the dog 3041s rotated to swing the windthe pins 3 I 8 causes operations, or initiating winding ing mass W into contact with the tractor roll 50, for the purpose of preventing the dog 304 from swinging about its axis 3I6 and allowing the feeler 3I0 to drop. Thus when this'stop 503 is provided the tensionexerted on' the yarn Y by rotation of the winding mass W is unable to yarn Y isengaged by the traverse eye I06 and thereafter traversed. The dotted line 0 in Fig. 5 indicates the relation between the feeler 3 I 0, traverse eye I06 and tractor roll 50 which obtains while the dog 304 is engaged by the stop 503, this relation being such that yarn passingaover the v feeler 3I0 is held above and free from the traverse eye I06.

Tension-The form of the invention illus trated in Figs. 1 to 10 employs (in conjunction with the devices for winding and traversing the yarn Y) a tension device advantageously positionedbetween the slotted blade II5 which acts as a fixed guide for the yarn and the oscillating traverse eye I06. Between the points defined by the guide H5 and the traverse eye I06, the limiting positions of the oscillating run of yarn define a fan or V-shaped figure, diverging from thefixed guide I05. The tension device particularly shown in Figs. 4,5, 6, '7, 9 and 10 is adapted to exert tension upon this oscillating yarn without interfering unduly with its freedom of oscillation. The parts for thus tensoning the yarn are shown as comprising two intermeshing series, 322 and 323, respectively, of fin- .gers carried respectively by shafts 322 and 323 which are mounted to turn in bearings upon the cover plate I I0 of the carrier. The run of the yarn Y takes a sinuous course in passing between the fingers of the two series, and the friction thus produced tensions the yarn on its way to the winding mass C. As the traverse eye I06 o erates,

- carriers are preferably opened as they approach this end of the machine and at about the time at which the driving of the winding mass is stopped as explained above, so that when replenishment operations are performed, the tension devices 'will be open for easy insertion for the yarn Y. Preferred mechanism for accomplishing this result as a consequence of the attainment by the carrier of a predetermined position near the end of the machine, comprises lifter rods 330 (Figs. 4 and '6) operatively connected to crank arms, 33I on the shafts 32 2 and 323 and a stationary cam 332 (Figs. 4 and 5). This cam 332, which may conveniently be affixed to the rail 4 by a bracket 333, is preferably positioned at about the points indicated by the reference character 301 in Fig. 1

at which point the driving of the winding masses of the carriage is severally stopped. As a carrier reaches the cam 332 its lifter arms 330 severally engage the cam and are lifted thereby to rotate the shafts 322 and 323 outwardly to the position shown in Fig.7, wherein they are free of 

